Is that an official MIUI forum?
I think he/she has copied the contents from the thread that was created by meredithhan herself there - link deleted
In any case, it can be anyone who has read permissions of at least 89, and not only beta users...

Hi, i've deleted the link in your thread in case more people see it. We've tell them to delete it in their site as well. Once we find out the user, we'll remove him from the beta team. Thank you for the info!

Comment

Disturbed™
Thanks buddy. It will be great if you could find the Guilty & punish him/her.
16:00, Nov-08-2013